Aldan (river)

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Aldan
The Aldan by the Kyllakh Range
Map of the Aldan River course
Location
Country	Russia
Physical characteristics
Source	Stanovoy Mountains
• location	Neryungri, Sakha
• coordinates	56°29′06″N 123°44′02″E / 56.485°N 123.734°E / 56.485; 123.734
• elevation	1,224 m (4,016 ft)
Mouth	Lena
• location	Sakha
• coordinates	63°26′46″N 129°33′13″E / 63.44611°N 129.55361°E / 63.44611; 129.55361
• elevation	43 m (141 ft)
Length	2,273 km (1,412 mi)
Basin size	729,000 km2 (281,000 sq mi)
Discharge
• average	5,489 m3/s (193,800 cu ft/s) (near mouth)
Basin features
Progression	Lena→ Laptev Sea
Tributaries
• left	Amedichi, Amga
• right	Timpton, Uchur, Maya, Allakh-Yun

The Aldan (Sakha and Russian: Алдан) is the second-longest right tributary of the Lena in the Sakha Republic in eastern Siberia.^[1] The river is 2,273 kilometres (1,412 mi) long, of which around 1,600 kilometres (990 mi) is navigable. It has a drainage basin of 729,000 square kilometres (281,000 sq mi).^[2]

The river was part of the River Route to Okhotsk. In 1639 Ivan Moskvitin ascended the rivers Aldan and Maya and crossed to the Ulya to reach the Sea of Okhotsk.

Its basin is known for gold and for Cambrian fossils.